Tobu Isesaki Line
E176155
The Tobu Isesaki Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting central Tokyo with Saitama and Gunma Prefectures.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tobu Isesaki Line canonical | 11 |
| Tōbu Isesaki Line | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1183164 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tobu Isesaki Line Context triple: [Tokyo Metro Hanzomon Line, throughServiceWith, Tobu Isesaki Line]
-
A.
Tobu Tojo Line
The Tobu Tojo Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting Ikebukuro in central Tokyo with suburban Saitama Prefecture.
-
B.
Yotsubashi Line
The Yotsubashi Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and serving key north–south corridors through the city.
-
C.
Imazatosuji Line
The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
-
D.
Tanimachi Line
The Tanimachi Line is a major rapid transit line in Osaka, Japan, running north–south through the city as part of the Osaka Metro network.
-
E.
Keio Inokashira Line
The Keio Inokashira Line is a private railway line in Tokyo operated by Keio Corporation, connecting Shibuya with the western suburb of Kichijōji and serving several popular residential and commercial districts along the way.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Tobu Isesaki Line Target entity description: The Tobu Isesaki Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting central Tokyo with Saitama and Gunma Prefectures.
-
A.
Tobu Tojo Line
The Tobu Tojo Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting Ikebukuro in central Tokyo with suburban Saitama Prefecture.
-
B.
Yotsubashi Line
The Yotsubashi Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and serving key north–south corridors through the city.
-
C.
Imazatosuji Line
The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
-
D.
Tanimachi Line
The Tanimachi Line is a major rapid transit line in Osaka, Japan, running north–south through the city as part of the Osaka Metro network.
-
E.
Keio Inokashira Line
The Keio Inokashira Line is a private railway line in Tokyo operated by Keio Corporation, connecting Shibuya with the western suburb of Kichijōji and serving several popular residential and commercial districts along the way.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway line ⓘ |
| category | Private railway line in Japan ⓘ |
| connectsArea |
Gunma Prefecture
ⓘ
Saitama Prefecture ⓘ central Tokyo ⓘ |
| connectsTo |
Tobu Kiryū Line
NERFINISHED
ⓘ
Tobu Koizumi Line NERFINISHED ⓘ Tobu Nikko Line NERFINISHED ⓘ Tobu Sano Line NERFINISHED ⓘ Tobu Skytree Line ⓘ Tokyo Metro Hanzomon Line NERFINISHED ⓘ Tokyo Metro Hibiya Line ⓘ |
| country | Japan ⓘ |
| electrification | 1500 V DC overhead catenary ⓘ |
| electrificationSystem | overhead line ⓘ |
| fareSystem | Tobu Railway fare system ⓘ |
| hasBranding |
Tobu Skytree Line (southern section branding)
ⓘ
linked to:
Tobu Skytree Line
|
| hasRollingStockOperator | Tobu Railway ⓘ |
| hasThroughServicesWith |
Tokyo Metro Hanzomon Line
NERFINISHED
ⓘ
Tokyo Metro Hibiya Line ⓘ |
| locatedIn |
Greater Tokyo Area
ⓘ
linked to:
Tokyo metropolitan area
Gunma Prefecture ⓘ Japan ⓘ Saitama Prefecture ⓘ Tokyo Prefecture ⓘ |
| operator | Tobu Railway ⓘ |
| owner | Tobu Railway ⓘ |
| partOfNetwork |
Tobu Railway network
ⓘ
linked to:
Tobu Railway
|
| primaryFunction |
commuter transport
ⓘ
interurban transport ⓘ |
| railwayCompanyType | private railway ⓘ |
| railwayGauge | 1,067 mm ⓘ |
| regionServed |
Kanto region
ⓘ
linked to:
Kantō region
|
| servesMetropolitanArea | Tokyo metropolitan area ⓘ |
| servesPurpose |
daily commuting
ⓘ
regional access between Tokyo and northern Kanto ⓘ |
| serviceType |
express
ⓘ
limited express ⓘ local ⓘ through service to subway lines ⓘ |
| status | in operation ⓘ |
| trackConfiguration | mostly double track ⓘ |
| usesSignalling | automatic block signalling ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Tobu Isesaki Line Description of subject: The Tobu Isesaki Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting central Tokyo with Saitama and Gunma Prefectures.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.